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1const Alpaca = require('@alpacahq/alpaca-trade-api')
2// minimist is used to parse command line arguments
3const minimist = require('minimist')
4const minimistOpts = require('minimist-options')
5// conf helps with saving config options to a file
6const Conf = require('conf')
7const config = new Conf({ configName: 'alpacacli' })
8
9const alpaca = new Alpaca({
10  keyId: config.get('keyId'),
11  secretKey: config.get('secretKey')
12})
13
14const cliOptions = minimistOpts({
15  type: { type: 'string' },
16  'time-in-force': { type: 'string' },
17  'limit-price': { type: 'number' },
18  'stop-price': { type: 'number' },
19  'client-order-id': { type: 'string' }
20})
21
22const args = minimist(process.argv.slice(2), cliOptions)
23
24// The exclamation here is a shortcut to call the function.
25// This is where the work actually starts.
26!async function() {
27  try {
28    // args._ is an array containing the sequential command line args
29    let [side, qty, symbol] = args._
30    if (!symbol) {
31      // allow omitting the qty, default to 1
32      symbol = qty
33      qty = 1
34    }
35    const order = await placeOrder(side, qty, symbol, args)
36    const description = await generateFancyOrderDescription(order)
37    console.log(description)
38  } catch (err) {
39    console.error(err.message)
40  }
41}()
42
43async function placeOrder(side, qty, symbol, options) {
44  return alpaca.createOrder({
45    symbol,
46    qty,
47    side,
48    type: options.type || 'market',
49    time_in_force: options['time-in-force'] || 'gtc', // good til canceled
50    limit_price: options['limit-price'],
51    stop_price: options['stop-price'],
52    client_order_id: options['client-order-id']
53  })
54}
55
56// The most complicated part is actually just making some pretty output.
57// The things we display will change based on the type of order being made.
58// If this is a market order, we will actually have to fetch the current price.
59async function generateFancyOrderDescription (order) {
60  const priceText = order.type === 'stop_limit' ? `between $${order.stop_price} and $${order.limit_price}`
61    : order.type === 'limit' ? `at $${order.limit_price}`
62    : order.type === 'stop' ? `at $${order.stop_price}`
63    // If it's a market order, we didn't actually specify a price, so we have to get that from the api
64    : `at $${await getMarketPrice(order.symbol)}`
65  const sharesText = order.qty > 1 ? 'shares' : 'share'
66
67  return `Placed a ${order.type} order to ${order.side} ${order.qty} ${sharesText} of ${order.symbol} ${priceText}.
68
69  order id:  ${order.id}`
70}
71
72async function getMarketPrice (symbol) {
73  const latestBars = await alpaca.getBars('minute', symbol, { limit: 1 })
74  // getBars returns a map of arrays of price data,
75  // but we are only fetching one bar for one symbol.
76  return latestBars[symbol][0].c
77}